I bought a '93 5.9 Cummins engine that had an automatic tranny. The engine did not come with a tranny or flex plate but it did come with the engine to transmission adapter that bolts to the back of the block. Will the 94-95 47RH bolt up to this to adapter? And will the '94-'95 flex plate bolt up to the '93 crank? Any other issues putting the '94-'95 tranny on the '93 engine?

Thanks,
Mike

 

You'll need a thicker/deeper engine-bellhousing adapter from a 94-95 engine. And yes the 94-95 flex-plate will bolt into the 93.

It is highly-possible you'll also need to either move the cross member back or slot it in order to accomodate the extra length of the adapater-bellhousing-transmission (the thicker adapter plate makes it so). When I did my 4x4 93, I slotted it and welded a reinforcement around the slot; the cross-member is a very heavy-duty piece; I still have it in my backyard.

Also, but not highly possible, you may have to shorten the rear driveshaft. You'lll have to get everything in place before deciding to shorten it or not. The same is true with lenghtening the front driveshaft (if 4x4). But if your truck is 4x4, you'll have bigger issues being the tcase is on the driver side.
And, the wiring of the speed sensor in your will not work, I was able to get it fixed though.

Lastly, you'll have to adapt the 2-wire OD plug of the 93 to the the 3-wire OD/LU wire of the 47RH and then figure out how to control the lockup feature of the 47RH. I've just finished doing this for my motorhome.

Edit: it sounds like you have a 2wd so you may not encounter all of the above issues.

 

Thanks for the reply classA, I'm wanting to take out the 10 speed and put a auto in my old power wagon with a divorced transfer case so drive lines are not really an issue.

Please correct me if I'm wrong but I planned on controlling the OD and lock up with two toggle switches.

You or anybody have a engine-bell housing adapter from a 94-95 for sale?

The '96-02 adapters won't work?

Anything else I might need for this conversion?

 

Any 2nd gen adapter plate will work even from a manual or auto. They are all the same. Check ebay or some local classifieds. You'll also need a 2nd gen starter since the adapter plate is thicker.